One of the traditional Japanese heating equipment is the Kotatsu. Perhaps, You may have seen it with anime or manga.
The kotatsu is a low table with a quilt and table top. There is an electric heater in the kotatsu, so if you put your feet into it, your body will warm up. Moreover, you can eat while sitting.
By the way, many cats seems to like a kotatsu.
However, if you sleep in a kotatsu, you will catch a cold easily, because you sweat.